Ok I've been threw the posts and every thing I've found similar had no finish
or answer to the problem.
86 IROC Z Vert TPI 305 But it may be one of the 350's as it has the early Valve covers only had it a week now haven't studied on that part yet
Anyway I Got rid of codes 32 43 44
Replaced:
Plug wires
cap
roter
plugs
TPS
IAC
Knock sensor
O2 sensor
Checked:
Have mil vols at piro on EGR
have ohms at temp sensor
Pulled the egr and it is operating correctly
OK the problem is When I adjust the iac and tps
turn off the car and hook everything back set the TPS and start it It works and runs perfectly, idle at 700
or so steady and drives great
After I turn it of and restart it it idles at a constant 1600
and does that consistently until I pull the IAC like I did when I adjusted it
reconnect and start it works perfectly again and so on
It has to be something simple
Please help

Thank you in advance for your help with this
Riley

 

Found the problem It was the EGR
Explains why it acted like it had a a massive vacuum leak